Application Notes:
 

tag open cup


is an apparatus ffor determining the flash point of hydrocarbon liquids, usually solvents, having flash points between -17.8° and 168°C (0° to 325°F), under test methods prescribed in ASTM-D-1310. The test sample is heated in an open cup at a slow, constant rate. A small flame is passed over the cup at specified intervals. The lowest temperature at which the vapors above the sample briefly ignite is the flash point.

Also see Cleveland open cup.

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